Commit 3f72879e authored Aug 05, 2019 by Andy Shevchenko Committed by Greg Kroah-Hartman Sep 04, 2019

serial: 8250_exar: Replace msleep(1) with usleep_range()



As explained in Documentation/timers/timers-howto.rst
the small amount of milliseconds sometimes produces
much longer delays.

Replace msleep(1) with usleep_range(1000, 1100).

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190805142535.21948-2-andriy.shevchenko@linux.intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 653d00c8

drivers/tty/serial/8250/8250_exar.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -180,7 +180,7 @@ static void exar_shutdown(struct uart_port *port)
		tx_complete = 1;
		else
		tx_complete = 0;
		msleep(1);
		usleep_range(1000, 1100);
		} while (!uart_circ_empty(xmit) && !tx_complete && i++ < 1000);

		serial8250_do_shutdown(port);